Page 150 - Algebra

Exercise:
Find the degree and roots of the polynomial from the graph.
1.
2.
a) Degree = 3, roots = –2, –1, 1 c) Degree = 4, roots = 2, –1, 1, 1 e) None of the above
b) Degree = 3, roots = 2, 1, 1
d) Degree = 4, roots = 2, –1, –1, 1
b) d)
In the Cartesian plane, the function f(x) has four x-intercepts at –4, –2, 4, and 2. Which of the
following could be a graph of the function?
f(x) = (x2 – 16)(x2 – 4)
a)
c)
e) None of the above
f(x) = (x2 + 16)(x2 – 4)
f(x) = (x2 – 8)(x2 – 4)
f(x) = (x2 + 8)(x2 – 4)
Answer questions from 6 to 8 based on the following graph.
3. For –2 ≤ x ≤ 5, the function f(x) has a maximum at which value of x?
a)x = – 2 b) x = – 6 c) x = 3 d) x = 5 e) x = 2
Page 149 of 177
Algebra I & II